Ext JS is a cross-browser JavaScript library for building rich internet applications. * High performance, customizable UI widgets * Well designed, documented and extensible Component model * Commercial and Open Source licenses available Make an impact : EXTJS 3.0 is here.. Join over 400,000 developers working smarter, not harder. Deliver results faster with: * Direct, CRUD and REST support for streamlined server communications * New Examples and Components including Charting * Over a 1,000 enhancements and fixes - improved memory management in IE6 * Documented API and refactored CSS. * Backwards compatible to keep you moving forward. EXTJS4 support cross platform browser compatibility. IE 6+ FF 3+ (PC, Mac) Safari 4+ Chrome 10+ Opera 11+ (PC, Mac)
A foundation you can build.